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Biomedical subjects

H Sboui

Publications and source records attributed to H Sboui.

7 recordsLinked to original sources

Outbreak of Pseudomonas putida bacteraemia in a neonatal intensive care unit.

During the period of 9-27 March 2001, Pseudomonas putida strains were recovered from 10 neonates hospitalized in the neonatal intensive care unit of Farhat Hached Hospital, Sousse (Tunisia). Seven neonates developed bacteraemia, and three had an umbilical catheter-related infection (without bacteraemia). A total of 18 isolates were cultured from blood (N = 11) and catheters (N = 7). These isolates were identified as P. putida by routine biochemical methods (API 20 NE, bioMérieux, Lyon, France). Restriction endonuclease DNA profiles were determined by pulsed-field gel electrophoresis using two endonucleases XbaI and SpeI. They yielded the same patterns showing that the outbreak was caused by a single clone of P. putida. Although the antiseptic solutions used to clean the umbilicus were implicated circumstantially as probable sources, they were not sampled and so this could not be confirmed.

Bacteremia↗

Epidemiology and clinical presentation of respiratory syncytial virus infection in a Tunisian neonatal unit from 2000 to 2002.

Respiratory syncytial virus (RSV) is an important viral pathogen causing lower respiratory tract infection (LRI) in infants. This study describes the clinical and genetic epidemiology of RSV infection among Tunisian neonates. Nasopharyngeal aspirates collected from 268 newborns with LRI were screened for RSV by immunofluorescence assay. Positive samples were analysed by RT-PCR-hybridisation assay for subgroup classification of RSV genomes. RSV infection was present in 23.1% of neonates, with a predominance in males. Peak incidence occurred in winter. Subgroup classification showed a higher prevalence of group B than group A strains. Nosocomially acquired RSV infection was present in 37% of neonates, 54.3% had an underlying condition predisposing to severe disease and 13% died. The average duration of hospital stay was 10 days and 87% of newborns required supplemental oxygen. As no currently effective treatment is available, preventive measures are a priority in high-risk infants.

Age Distribution↗

[Neonatal hemorrhagic syndromes].

PURPOSE: The purpose of our study was to clarify the frequency of these causes. PATIENTS AND METHODS: Retrospective study using reports of newborns in the neonatal unit in Sousse (Tunisia) from 1991 to 1996, hospitalized for hemorrhagic syndrome defined by bleeding, exteriorized or not, whatever its importance, severity, causes and the associated clinical and biological disorders. Isolated meningeal hemorrhages, limited cutaneo-mucous hemorrhages (conjunctival hemorrhages, bruises), and genital crises of the newborn, were excluded. RESULTS: One hundred and fifty-five hemorrhagic syndromes were observed from 7,128 newborn infants (2.17% of hospitalization). Sex ratio was 1.42. Prematurity rate was 35.7%. The Apgar score was < 7 at one minute in 40.7% of cases. Disorders associated with hemorrhagic syndromes were observed in 118 newborn infants (76.1%) with a predominance of neonatal infections (35.6%). The etiology of neonatal hemorrhages was specified in 93% of cases: newborn hemorrhagic disease (27.7%), disseminated intravascular coagulation (27.1%), isolated thrombocytopenia (9%), digestive lesions (13.5%), and obstetrical trauma (2.6%). CONCLUSION: The frequency of the newborns hemorrhagic syndromes underlines the need for its systematic prevention by vitamin K in the antenatal period to the mother and after birth to the newborn.

Disseminated Intravascular Coagulation↗

[Neonatal hemoperitoneum].

PATIENTS AND RESULTS: A series of four cases observed in the department of pediatric surgery in Monastir between 1990 and 1998 are reported. The diagnosis was made in the two first days of life. The clinical features associated paleness, shock and abdominal distension. Ultrasonography revealed that the hemoperitoneum was associated with liver hematoma in three cases and with retroperitoneal hematoma in two cases. Three infants required emergency hemostatic laparotomy. The fourth was stabilized by initial resuscitation. One infant died at the age of six months following subarachnoid hemorrhage and subdural hematoma. No complication occurred in the three remaining patients. CONCLUSION: The pathogeny, clinical features and treatment of the hemoperitoneum in the newborn are discussed. The authors stress preventive measures, the only way to decrease the incidence of this neonatal complaint.

Hematoma↗

[Hereditary sideroblastic anemia: a rare diagnosis].

Hereditary sideroblastic anemia is a very rare disease recessive and X-linked that affect heme biosynthesis by deficit or decreased of delta aminolevulinic acid synthase (ALAS) activity. We report a case of a six-month-old boy, admitted in the hospital for anemic syndrome. The hemogram showed anemia (hemoglobin: 4.5 g/dL), frankly hypochronic microcytic and a regenerated (mean corpuscular hemoglobin concentration: 26 g/dL, mean cell volume: 53 fl, reticulocytes: 10 x 10(9)/L) with red cells morphologic disorders in smears (anisopoikylocytosis) without attack of the other lineages; white blood cells: 11 x 10(9)/L (neutrophils: 64% and lymphocytes: 35%); platelets: 350 x 10(9)/L. Examination of bone marrow showed an important erythroid hyperplasia (about 69%) with dyserythropoiesis. Perls stain revealed intense siderosis with 90% of ringed sideroblasts and a large number of siderocytes. Exploration of ALAS2 and ABC7 genes on the DNA of the infant was not found abnormalities. Treatment with pyridoxine corrects moderately the anemia. By the way, we proposed to remind that iron deficiency, inflammatory syndrome and thalassemia are the common microcytic anemia. However, it's mandatory to explore other causes if diagnosis is not solved.

Anemia, Sideroblastic↗